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Finding the Fourth Proportional to 28,042.44, 42,070.26 and 8,321.16

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Solution

The fourth proportional to 28,042.44, 42,070.26 and 8,321.16 is: 12,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.44 : 42,070.26 = 8,321.16 : x
  2. Step 2: Convert to fraction form
    28,042.44/42,070.26 = 8,321.16/x
  3. Step 3: Cross multiply
    28,042.44x = 42,070.26 × 8,321.16
  4. Step 4: Simplify right side
    28,042.44x = 350,073,364.70
  5. Step 5: Solve for x
    x = 350,073,364.70/28,042.44
  6. Step 6: Final answer
    x = 12,483.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.